Water pressure in a tank

ar202

1. The problem statement, all variables and given/known data

A water pipe feeds a water tower with water. The tower is 15 metres tall.
If the water is to flow into the tank what is the minimum pressure of water at the bottom of the tower?
Assume litre of water = 1 kg
Assume 1 BAR = 1kg cm-2

2. Relevant equations

P = p g h ?

3. The attempt at a solution

am i using the correct equation...?

ar202

sooooooooo...

1000 * 9.81 * 15 = 147150 or 1.45 atmopspheres?

pinsky

It doesn't matter if you use pascals or atmospheres. And the formula is correct.

ar202

ah okay, thanks. Is the answer correct?

pinsky

Either you didn't express yourself good enough or you're asking a stupid question. :)

ar202

hah

ar202

turns out i got this WRONG!!! any thoughts?!

lolrelativity

Apparently You had to count in air pressure (10^5 pascals) since it can still exert pressure on the bottom.....Is it correct with that added?

ar202

Yeah you're right, i didn't factor in surface pressure. doh!